Remove bin and Gemfile.lock from repository

Author: awwa

.gitignore

@@ -1,3 +1,4 @@
+bin
 *.gem
 *.rbc
 /.config
@@ -28,7 +29,7 @@ build/
 
 # for a library or gem, you might want to ignore these files since the code is
 # intended to run in multiple environments; otherwise, check them in:
-# Gemfile.lock
+Gemfile.lock
 # .ruby-version
 # .ruby-gemset